US6615633B1 - Metal plateness controlling method and device - Google Patents

Metal plateness controlling method and device Download PDF

Info

Publication number
US6615633B1
US6615633B1 US09/889,614 US88961401A US6615633B1 US 6615633 B1 US6615633 B1 US 6615633B1 US 88961401 A US88961401 A US 88961401A US 6615633 B1 US6615633 B1 US 6615633B1
Authority
US
United States
Prior art keywords
plate
metal sheet
edge
flatness
center portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09/889,614
Other languages
English (en)
Inventor
Toru Akashi
Motokazu Koreeda
Seiji Arizumi
Yoshihiro Serizawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NITTEISU PLANT DESIGNING Corp
Nippon Steel Corp
Nippon Steel Plant Designing Corp
Original Assignee
Nittetsu Plant Designing Corp
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP32768499A external-priority patent/JP2001137943A/ja
Priority claimed from JP2000050759A external-priority patent/JP2001239312A/ja
Application filed by Nittetsu Plant Designing Corp, Nippon Steel Corp filed Critical Nittetsu Plant Designing Corp
Assigned to NIPPON STEEL CORPORATION, NITTEISU PLANT DESIGNING CORPORATION reassignment NIPPON STEEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AKASHI, TORU, ARIZUMI, SEIJI, KOREEDA, MOTOKAZU, SERIZAWA, YOSHIHIRO
Application granted granted Critical
Publication of US6615633B1 publication Critical patent/US6615633B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0021—Cutting or shearing the product in the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the present invention relates to a method and an apparatus to control the flatness of a metal sheet or plate through; heating the edge portions and/or the center portion of the metal sheet or plate, using a heating apparatus or heating apparatuses installed between two rolling stands of a tandem finishing mill, or at the entry to and/or the exit from a reversing finishing mill, or using a heating apparatus or heating apparatuses immediately after rolling; and successively cooling the sheet or plate after finish rolling: for eliminating edge waves occurring at the edge portions of the width direction and/or center waves occurring at the center portion of the width direction in a sheet or plate of metal such as steel, aluminum, titanium and the like result from temperature difference across its width before cooling.
  • Waviness (edge waves) of metal materials especially that of steel materials, which becomes apparent when the materials are cooled at a cooling process after a rolling process, has been prevented conventionally through over-compensation of the waviness by forming moderate waviness at the width center (center waves or center buckles) at a hot rolling mill or a hot leveler after the rolling.
  • waviness not corrected by this method has to be corrected separately by leveling work at a subsequent conditioning process.
  • Japanese Unexamined Patent Publication No. H5-269527 proposes a method to control the flatness of a metal strip by: installing a tension leveler at a position where the cooling of the strip is finished but its coiling is not yet finished; installing a shape detection roll capable of measuring the transverse tension distribution of the strip at the position immediately before the final roll of the tension leveler; and changing the screw-down setting of the shape detection roll based on the metal strip flatness information detected by itself.
  • H10-263658 proposes a method to control the flatness of a metal strip by: calculating an elongation rate difference from flatness information given by a flatness gauge installed at the exit from a hot finishing mill and flatness information before coiling given by another flatness gauge installed at the entry to a coiler; and feeding the elongation difference information back to the roll bending control function of the hot finishing mill.
  • Japanese Pat. No. 2792788 discloses an apparatus provided with a roller leveler and an edge heater installed between a roughing mill and a finishing mill for preventing the warping of the leading end of a strip.
  • the method to control the flatness of metal strips uses the information of strip flatness or elongation strain difference as the basis of the flatness control, and neither of them does considers the information of the temperature distribution across the strip width.
  • the transverse temperature distribution of the strip becomes even.
  • the transverse temperature distribution tends to be such that the temperature of the edge portions is lower than that of the center portion and temperature difference is generated.
  • the object of the present invention which solves the problems contingent with the above conventional technologies, is to provide a method and an apparatus to control flatness, capable of improving the flatness by preventing edge waves occurring at the edge portions and center waves in a metal sheet or plate from appearing after cooling.
  • the gist of the present invention therefore, is as follows:
  • a method to control the flatness of a metal sheet or plate characterized by: measuring the surface temperatures of the metal sheet or plate at the edge portions and the center portion across its width after one or more rolling passes at a tandem or reversing finishing mill; controlling the heating temperatures of the edge portions and/or the center portion based on the measured surface temperatures; and then water-cooling and/or hot-leveling the metal sheet or plate.
  • a method to control the flatness of a metal sheet or plate characterized by: measuring the surface temperatures of the metal sheet or plate at the edge portions and the center portion across its width between two rolling stands of a tandem finishing mill; controlling the heating temperatures of the edge portions and/or the center portion based on the measured surface temperatures; and then cooling the metal sheet or plate after the finish rolling.
  • a method to control the flatness of a metal sheet or plate characterized by: measuring the surface temperatures of the metal sheet or plate at the edge portions and the center portion across its width at the entry to and/or the exit from a reversing finishing mill; controlling the hearing temperatures of the edge portions and/or the center portion based on the measured surface temperatures; and then cooling the metal sheet or plate after the finish rolling.
  • a method to control the flatness of a metal sheet or plate characterized by: heating the edge portions and/or the center portion in the width of the metal sheet or plate after completing hot rolling; and then water-cooling and/or hot-leveling the metal sheet or plate.
  • a method to control the flatness of a metal sheet or plate characterized by: hot-leveling the metal sheet or plate after completing hot rolling; heating the edge portions and/or the center portion in the width of the metal sheet or plate; and then leaving it to cool naturally in normal atmosphere or cooling it with water.
  • ROT cooling run out table
  • a method to control the flatness of a metal sheete or plate according to the item (4) or (5) characterized by: measuring the surface temperatures of the metal sheet or plate at the edge portions and/or the center portion across its width after completing hot rolling and before heating it; and then controlling the heating temperatures of the edge portions and/or the center portion based on the measured temperatures.
  • An apparatus to control the flatness of a metal sheet or plate characterized by having: a tandem finishing mill; a means to measure the surface temperatures of the metal sheet or plate at the edge portions and the center portion across its width installed between two rolling stands of the tandem finishing mill; a means to heat the edge portions and/or the center portion in a manner to control the heating temperatures based on the measured surface temperatures; and a means to cool the metal sheet or plate at the exit from the finishing mill.
  • An apparatus to control the flatness of a metal sheet or plate characterized by having: a reversing finishing mill; a means to measure the surface temperatures of the metal sheet or plate at the edge portions and the center portion across its width installed at the entry to and/or the exit from the reversing finishing mill; a means to heat the edge portions and/or the center portion in a manner to control the heating temperatures based on the measured surface temperatures; and a means to cool the metal sheet or plate at the exit from both the means to measure the surface temperatures and the finishing mill.
  • An apparatus to control the flatness of a metal sheet or plate characterized by having an edge heater and/or a center portion heater for the metal sheet or plate between a hot finishing mill and a water cooling apparatus and/or a hot Leveler.
  • An apparatus to control the flatness of a metal sheet or plate characterized by having an edge heater and/or a center portion heater for the metal sheet or plate at the exit from a hot leveler, which is installed at the exit from a hot finishing mill.
  • the temperature of an edge portion of a metal sheet or plate is defined as the surface temperature of the metal sheet or plate at a point in the range of 50 to 200 mm from the edge.
  • FIG. 1 is an illustration showing an outline of production processes where a tandem finishing mill is used, and an embodiment of the present invention.
  • FIG. 2 is an illustration showing an outline of production processes of a hot-rolled steel sheet or plate, and an embodiment of the present invention.
  • FIG. 3 is an illustration to explain the definition of the steepness of sheet/plate waves.
  • FIG. 4 is a graph showing the relationship between the temperature difference at the sheet/plate edges and the steepness, verifying the principles of the present invention.
  • FIGS. 5 ( a ), 5 ( b ) and 5 ( b ′) are diagrams showing the outlines of the processes according to the present invention to control the flatness between two finishing mill stands.
  • FIGS. 6 ( a ), 6 ( b ), 6 ( c ), 6 ( d ), 6 ( e ), 6 ( f ) and 6 ( g ) are diagrams showing the outlines of the processes according to the present invention to control the flatness after completing the finish rolling.
  • the inventors of the present invention examined the mechanisms which deteriorate the flatness of metal sheets or plates and the measures used to improve the flatness in various ways. The principles of the present invention are described hereafter and the description is based on the drawings.
  • FIGS. 1 and 2 are schematic illustrations of finishing mills, and the facilities therefore, used in the production processes of hot-rolled steel sheets or plates.
  • a steel sheet or plate is first rolled into a prescribed size at a finishing mill 1 , transferred on a run out table (ROT) 2 , cooled to a prescribed temperature by an ROT cooler 3 for the purpose of obtaining prescribed material quality, and then wound into a coil at a coiler 4 .
  • ROT run out table
  • the coiling temperature of a steel sheet or plate ranges from 100 to 750° C. depending on the material quality and, when the coil is cooled down to room temperature and unwound, there are cases that wavy deformations appear at either of its edges.
  • This phenomenon called edge wave is the very flatness problem the present inventors are concerned about. It is the edge wave that becomes a problem with most hot-rolled steel sheets and plates.
  • the present invention aims at preventing edge waves and center buckles which appear due to transverse temperature difference.
  • the waviness may be caused by other reasons.
  • the shape of the mandrel of a coiler 4 or pinch rolls (PRs) is convex and coiling tension is abnormally large, the waviness may appear in the center portion rather than the edges.
  • this type of waviness is out of the scope of the present invention.
  • FIG. 3 shows the definition of an edge wave.
  • the steepness of a wave is expressed as the percentage figure of the edge wave height H divided by the pitch of the wave L, multiplied by 100.
  • the present inventors measured the temperatures of hot-rolled steel sheets of the same steel grade and size (2 mm in thickness and 1,200 mm in width) at the same measuring point (400 m from the coil center) using a pyrometer 5 capable of measuring the temperatures at the center and 20 mm from the both edges across the width, installed between two stands of a finishing mill or at the exit from a finishing mill, and analyzed the relationship between the flatness of the sheets after cooling and the surface temperature difference between the width center and 20 mm from each of the edges.
  • Hot-rolled strips having good flatness and free from edge waves after unwinding can be produced according to the present invention by rolling them on a tandem finishing mill, cooing them using the ROT cooling and coiling them thereafter (see FIGS. 5 ( a ) and 6 ( a )).
  • the strip travelling time from a finishing mill stand to the subsequent finishing mill stand is 0.5 to 1 sec.
  • the same from the final finish rolling to the beginning of the cooling is 0.5 to 3 sec.
  • the strips are coiled under tension. For this reason, at high temperatures, the metal material creeps under the tension so as to decrease the stress distribution in the transverse section of the strips, and thus residual stress created during the rolling is removed and the edge waves and center buckles of the strips are already straightened.
  • a highly accurate temperature control can be obtained by measuring the surface temperature of a metal sheet or plate before edge heating. To obtain a more accurately controlled shape, it is preferable to install a temperature measurement apparatus immediately before an edge heater. It is desirable to measure a temperature distribution across the strip width using a thermo-viewer or the like, otherwise, if this is impossible, to measure the temperature at three points, at the center and at 5 to 20 mm from the both edges. If an edge measuring point is less than 5 mm from an edge, the measurement will not be accurate and, if it is more than 20 mm from the edge, the measurement obtained will not represent the real condition of the edge portion.
  • a reversing mill is used instead of a tandem finishing mill, and the plates are finish-rolled after heating the edges and/or the center or all the width at the entry to and/or the exit from the reversing mill.
  • hot leveling is subsequently applied without being accompanied by any other conditioning processes
  • plates having a better shape than in the case of no edge heating can be obtained.
  • controlled cooling water cooling
  • hot leveling before or after the controlled cooling
  • the plates undergo edge heating and/or center heating after hot leveling.
  • edge heating or center heating and then left to cool naturally
  • their shape is better than the case that neither the edge heating nor the center heating is applied.
  • FIG. 5 ( c ) shows an outline of the processes according to the present invention.
  • the apparatus to heat the edge portions and/or the center portion is any one of an induction heater, a laser irradiation heater, a plasma irradiation heater and a gas combustion heater.
  • a metal sheet or plate having a good shape is obtained by estimating the strain difference at the room temperature between the center portion and the edge portions caused by the elongation strain difference and thermal strain difference before cooling between said portions and by minimizing the estimated strain difference through reducing the temperature difference between said portions to ⁇ 50° C. or less. It is preferable to reduce the temperature difference to ⁇ 25° C. or less, more preferably to ⁇ 15° C. or less or, ideally, to ⁇ 5° C. or less. It is desirable to make the temperature distribution of a metal sheet or plate across its width as even as possible. Since it is essential to reduce the strain difference at the room temperature between a center portion and edge portions caused by the elongation strain difference and the thermal strain difference between said portions, it does not matter if the edge portions become hotter than the center portion.
  • the transverse temperature distribution of a steel sheet or plate having undergone edge heating and/or center heating is made homogeneous even after a controlled cooling and, therefore, the steel sheet or plate having an excellent shape after cooling is obtained, and the product does not require cold leveling or other shape correction measures.
  • the residual stress of a steel sheet or plate is decreased during processing at a hot leveler.
  • the hot leveler and its leveling rolls are directly cooled with a water jet or spray to prevent roll sticking and other equipment damage by the heat of the metal sheet or plate, the metal material will also be cooled during the leveling operation. In this process, the edge portions are cooled more than the other portions, creating a temperature difference between the edge portions and the center portion.
  • the temperature of a metal sheet or plate is controlled more accurately according to the present invention by measuring its surface temperature after completing the hot rolling and before heating the edge portions and/or the center portion (see FIGS. 6 ( a ) to 6 ( g )).
  • FIGS. 6 ( c ) and 6 ( f ) show that the temperature measurement is done after the leveling, it may be done between the rolling and the leveling.
  • the surface temperature may be measured at any position from the hot finishing mill to the edge heater and/or the center portion heater, but it is preferable for obtaining a better controlled shape of the sheet or plate to install a temperature measurement device immediately before the edge heater.
  • thermo-viewe or the like it is desirable to measure the temperature distribution across the strip width using a thermo-viewe or the like, otherwise, if this is impossible, measure the temperature at three points, the center and 5 to 20 mm from the both edges. If an edge measuring point is less than 5 mm from an edge, the measurement will not be accurate and, if it is more than 20 mm from the edge, the measurement obtained will not represent the real condition of the edge portion.
  • the production processes can be simplified, since it provides that the edges of a sheet or plate can be trimmed by heating the edges using a laser irradiation heater.
  • the edge portions where the thickness is reduced to below a permissible range in strip rolling, the phenomenon being called edge drop, can be trimmed off during the heating by controlling the laser output to a high level.
  • the present invention provides that a metal material is transferred while being held by one or more pairs of upper and lower pinch rolls after its leading end has come out of a hot finishing mill, it is also possible to prevent the occurrence of abnormal strip behavior such as flying, waving and the like during strip transfer on the run out table.
  • An ROT cooling zone is usually about 100 to 200 m long, and a strip runs a distance of tens of meters on the ROT under no tension until its leading end reaches a coiler and is wound on its mandrel to receive the tension.
  • the strip shape is not corrected during the no-tension period.
  • not only the temperature difference but also the residual stress at the exit from the rolling mill and change in the strip shape may disturb flatness.
  • Another problem in this production stage is that, while the strip is driven by the rolling rolls of the mill towards the coiler and transferred on the ROT by the friction of its rollers, it is not held firmly at the leading end and, therefore, the leading end may hit and damage production facilities as a result of flying or waving.
  • a heater 6 for heating edge and center portions was newly installed between two stands of a tandem finishing mill 1 of an existing production line, as shown in FIG. 1, as the means for heating the edge portions and the center portion, for the purpose of homogenizing the transverse temperature distribution of steel strips before they enter an ROT cooling apparatus 3 .
  • the strip surface temperature was measured at the strip width center and 20 mm from the edges with a radiation pyrometer 5 installed between two stands of the tandem finishing mill and immediately before the heater for the edge and center portions.
  • the heating means for the edge portions and the center portion heated the portions 10 mm from the both edges of steel strips 7 passing between two stands of the tandem finishing mill 1 using a CO 2 laser heater 6 .
  • the heating was commenced immediately after a tension was established on the strip between the two mill stands 1 .
  • the number of the coils having the edge waves and center buckles of the steepness of 1.5% among 1,000 coils was zero.
  • the flying/waving height of the strips between the two finishing mill stands 1 was controlled to 5 mm, which fact eliminated adverse effects on the heating operation and apparatus.
  • An edge heater 6 was newly installed at the exit from a finishing mill 1 of an existing production line, as shown in FIG. 2, as the means for heating edges, for the purpose of homogenizing the transverse temperature distribution of steel strips before ROT cooling.
  • the means for heating the edge portions heated the portions 10 mm from the both edges of the steel strips 7 using a CO 2 laser heater 6 .
  • the heating was commenced immediately after the leading end of steel strip 7 coming out from the finishing mill 1 went through a pinch roll unit 8 and a tension was established upon the strip by two pairs of pinch rolls to suppress flying and waving of the strips.
  • the use of the laser for the heating allowed cutting of the strips under a condition of 45 kW of heat input and. 0.5 m/sec. of strip travelling speed. Under said condition, it was possible to trim off the strip portions not satisfying a prescribed product thickness owing to the edge drop.
  • the number of the coils having the edge waves and center buckles of the steepness of 1.5% among 1,000 coils was zero.
  • the flying/waving height of the strips between the two pinch roll stands was controlled to 5 mm, which fact eliminated adverse effects on the heating operation and apparatus.
  • the production method according to the present invention improves cold flatness of a hot-rolled metal strip, a post-treatment for improving strip flatness by a skin pass mill can be eliminated. Additionally, the treatment time at a subsequent processing step can be reduced, since the present invention can suppress walking and jumping of strips caused by poor flatness during the processing. Further, when the strip heating according to the present invention is applied also for the purpose of edge trimming, final products ready for shipment can be obtained at a hot rolling process without any additional treatment, and a significant cost reduction is realized.
US09/889,614 1999-11-18 2000-03-17 Metal plateness controlling method and device Expired - Lifetime US6615633B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP32768499A JP2001137943A (ja) 1999-11-18 1999-11-18 金属板の平坦度制御方法及び装置
JP11-327684 1999-11-18
JP2000050759A JP2001239312A (ja) 2000-02-28 2000-02-28 金属板の平坦度制御方法及び装置
JP2000-050759 2000-02-28
PCT/JP2000/008093 WO2001036122A1 (fr) 1999-11-18 2000-11-16 Procede et dispositif permettant de controler la planeite des toles metalliques

Publications (1)

Publication Number Publication Date
US6615633B1 true US6615633B1 (en) 2003-09-09

Family

ID=26572599

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/889,614 Expired - Lifetime US6615633B1 (en) 1999-11-18 2000-03-17 Metal plateness controlling method and device

Country Status (8)

Country Link
US (1) US6615633B1 (ja)
EP (1) EP1153673B1 (ja)
KR (1) KR100432682B1 (ja)
CN (1) CN1278792C (ja)
AU (1) AU760833B2 (ja)
DE (1) DE60039102D1 (ja)
MX (1) MXPA01007250A (ja)
WO (1) WO2001036122A1 (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060021699A1 (en) * 2002-11-07 2006-02-02 Naoki Hase Heat-resistant flexible laminated board manufacturing method
US20070193322A1 (en) * 2006-02-17 2007-08-23 Beck William J Application of induction heating to control sheet flatness in cold rolling mills
US20100175452A1 (en) * 2007-06-22 2010-07-15 Joachim Ohlert Method for hot rolling and for heat treatment of a steel strip
CN101837374A (zh) * 2009-03-20 2010-09-22 西门子Vai金属科技有限公司 边缘平直度监控
US20110208345A1 (en) * 2007-08-17 2011-08-25 Outokumpu Oyj Method and equipment for flatness control in cooling a stainless steel strip
US20130104616A1 (en) * 2011-10-27 2013-05-02 Bohuslav Masek Method of production of pressed sheet parts with integrated preparation of blanks of non-uniform thickness
US20140060139A1 (en) * 2011-06-07 2014-03-06 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US20140076018A1 (en) * 2011-07-27 2014-03-20 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet
US20140350746A1 (en) * 2011-12-15 2014-11-27 Posco Method and Apparatus for Controlling the Strip Temperature of the Rapid Cooling Section of a Continuous Annealing Line
US9566625B2 (en) 2011-06-07 2017-02-14 Nippon Steel & Sumitomo Metal Corporation Apparatus for cooling hot-rolled steel sheet
US9889480B2 (en) 2013-03-11 2018-02-13 Novelis Inc. Flatness of a rolled strip

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100833012B1 (ko) * 2001-12-26 2008-05-27 주식회사 포스코 가공시 캠버를 방지 할 수 있는 고강도 붐용 열연 강판의제조방법
JP4878485B2 (ja) * 2006-03-17 2012-02-15 三菱日立製鉄機械株式会社 冷間連続圧延設備
DE102007012688A1 (de) * 2007-03-12 2008-09-18 Sms Demag Ag Verfahren zur Behandlung von Blechen
CN100515593C (zh) * 2007-09-24 2009-07-22 攀钢集团攀枝花钢铁研究院 普通四辊热带钢连轧机带钢边部增厚综合控制方法
JP5202036B2 (ja) 2008-02-29 2013-06-05 株式会社神戸製鋼所 平面性が優れたアルミニウム条材の製造方法
CN101780478B (zh) * 2009-01-21 2012-07-04 中冶赛迪工程技术股份有限公司 一种热轧带钢及钢板板形和精度控制的方法和设备
KR101134922B1 (ko) 2009-04-02 2012-04-17 주식회사 포스코 열간 압연공정의 철판 형상 교정장치 및 방법
CN101992218B (zh) * 2009-08-25 2013-05-01 鞍钢股份有限公司 冷轧带钢板形控制目标值的修正方法
CN102085535B (zh) * 2009-12-03 2012-11-14 唐山国丰钢铁有限公司 一种精轧机的调平控制方法
CN102581043B (zh) * 2011-01-18 2014-08-20 宝山钢铁股份有限公司 用于带钢热轧过程的水雾冷却系统及水雾冷却方法
CN103998154B (zh) * 2012-12-06 2015-09-09 新日铁住金株式会社 钢板制造方法
CN104043660B (zh) * 2013-09-26 2015-09-30 北大方正集团有限公司 一种非调质钢的生产工艺
CN104438356B (zh) * 2014-09-23 2017-04-05 北京首钢股份有限公司 一种改善薄规格集装箱板边部浪形的方法
DE102015112293A1 (de) * 2015-07-28 2017-02-02 Hydro Aluminium Rolled Products Gmbh Verfahren und Vorrichtung zur planheitsadaptiven Temperaturänderung von Metallbändern
CN107159719B (zh) * 2017-05-10 2019-02-22 燕山大学 一种钛合金板连轧控温装置及控温连轧方法
CN107282648B (zh) * 2017-06-21 2019-01-22 北京科技大学 一种热轧带钢全幅宽平坦度的控制方法
CN110665966A (zh) * 2019-10-24 2020-01-10 瓯锟科技温州有限公司 一种基于液态二氧化碳冷却及润滑的金属板带材轧制工艺
CN113617843B (zh) * 2021-09-14 2023-03-03 鞍钢股份有限公司 一种高温状态下消除热轧带钢残余应力的方法

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5695404A (en) 1979-12-28 1981-08-01 Kawasaki Steel Corp Manufacture of flat steel sheet
JPS5797813A (en) * 1980-12-09 1982-06-17 Toshiba Corp Temperature controlling method
US4503697A (en) * 1983-01-25 1985-03-12 Tippins Machinery Company, Inc. Method for hot rolling slabs
JPS6293028A (ja) 1985-10-21 1987-04-28 Mitsubishi Electric Corp レ−ザによる板材の曲げ加工方法
US4745786A (en) * 1985-10-14 1988-05-24 Nippon Steel Corporation Hot rolling method and apparatus for hot rolling
JPS63126608A (ja) 1986-11-18 1988-05-30 Sumitomo Metal Ind Ltd 厚鋼板製造ラインにおける誘導加熱装置
JPH03175001A (ja) 1989-12-05 1991-07-30 Romatetsuku Kk 帯鋸の歪取装置
JPH0466271A (ja) 1990-07-04 1992-03-02 Sumitomo Metal Ind Ltd 広幅厚鋼板の条切りキャンバ抑制法
JPH05228525A (ja) 1992-02-19 1993-09-07 Sumitomo Metal Ind Ltd 熱間圧延鋼帯の幅方向温度制御方法および装置
JPH06254616A (ja) 1993-03-05 1994-09-13 Nippon Steel Corp 形状の優れた厚鋼板の冷却方法およびその装置
JPH06269835A (ja) 1993-03-23 1994-09-27 Nippon Steel Corp 熱間仕上圧延材のスキッドマ−ク低減方法
JPH07132307A (ja) 1993-11-12 1995-05-23 Sumitomo Metal Ind Ltd 金属板のエッジ形状修正装置
JPH0871628A (ja) 1994-09-02 1996-03-19 Nippon Steel Corp 厚鋼板の耳波形状発生防止方法
US5611232A (en) * 1994-01-27 1997-03-18 Sms Schloemann-Siemag Aktiengesellschaft Method and arrangement for manufacturing hot rolled steel strip from continuously cast input stock
US5651281A (en) * 1993-03-29 1997-07-29 Sms Schloemann-Siemaq Method and apparatus for rolling rolled strips
JPH105868A (ja) 1996-06-18 1998-01-13 Nippon Steel Corp 制御冷却鋼板の形状制御方法
US5755128A (en) * 1995-08-31 1998-05-26 Tippins Incorporated Method and apparatus for isothermally rolling strip product
JPH1129094A (ja) 1997-07-14 1999-02-02 Toshio Kawakami ツインドルヒィン船
US5927118A (en) * 1996-05-28 1999-07-27 Nkk Corporation Method for making hot-rolled steel sheet and apparatus therefor
US6062055A (en) * 1997-04-10 2000-05-16 Danieli & C. Officine Meccaniche Spa Rolling method for thin flat products and relative rolling line

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522422A (en) * 1978-08-03 1980-02-18 Nippon Steel Corp Steel plate hot rolling method and device
JPS60174833A (ja) * 1984-02-20 1985-09-09 Nippon Steel Corp 熱鋼板の冷却方法
JPH0252187A (ja) * 1988-08-12 1990-02-21 Kawasaki Steel Corp レーザビームサイドトリマー設備
DE19540978A1 (de) * 1995-11-03 1997-05-07 Schloemann Siemag Ag Produktionsanlage zum kontinuierlichen- oder diskontinuierlichen Auswalzen von Warmband
JPH11290946A (ja) * 1998-04-16 1999-10-26 Nippon Steel Corp 厚鋼板の矯正方法

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5695404A (en) 1979-12-28 1981-08-01 Kawasaki Steel Corp Manufacture of flat steel sheet
JPS5797813A (en) * 1980-12-09 1982-06-17 Toshiba Corp Temperature controlling method
US4503697A (en) * 1983-01-25 1985-03-12 Tippins Machinery Company, Inc. Method for hot rolling slabs
US4745786A (en) * 1985-10-14 1988-05-24 Nippon Steel Corporation Hot rolling method and apparatus for hot rolling
JPS6293028A (ja) 1985-10-21 1987-04-28 Mitsubishi Electric Corp レ−ザによる板材の曲げ加工方法
JPS63126608A (ja) 1986-11-18 1988-05-30 Sumitomo Metal Ind Ltd 厚鋼板製造ラインにおける誘導加熱装置
JPH03175001A (ja) 1989-12-05 1991-07-30 Romatetsuku Kk 帯鋸の歪取装置
JPH0466271A (ja) 1990-07-04 1992-03-02 Sumitomo Metal Ind Ltd 広幅厚鋼板の条切りキャンバ抑制法
JPH05228525A (ja) 1992-02-19 1993-09-07 Sumitomo Metal Ind Ltd 熱間圧延鋼帯の幅方向温度制御方法および装置
JPH06254616A (ja) 1993-03-05 1994-09-13 Nippon Steel Corp 形状の優れた厚鋼板の冷却方法およびその装置
JPH06269835A (ja) 1993-03-23 1994-09-27 Nippon Steel Corp 熱間仕上圧延材のスキッドマ−ク低減方法
US5651281A (en) * 1993-03-29 1997-07-29 Sms Schloemann-Siemaq Method and apparatus for rolling rolled strips
JPH07132307A (ja) 1993-11-12 1995-05-23 Sumitomo Metal Ind Ltd 金属板のエッジ形状修正装置
US5611232A (en) * 1994-01-27 1997-03-18 Sms Schloemann-Siemag Aktiengesellschaft Method and arrangement for manufacturing hot rolled steel strip from continuously cast input stock
JPH0871628A (ja) 1994-09-02 1996-03-19 Nippon Steel Corp 厚鋼板の耳波形状発生防止方法
US5755128A (en) * 1995-08-31 1998-05-26 Tippins Incorporated Method and apparatus for isothermally rolling strip product
US5927118A (en) * 1996-05-28 1999-07-27 Nkk Corporation Method for making hot-rolled steel sheet and apparatus therefor
JPH105868A (ja) 1996-06-18 1998-01-13 Nippon Steel Corp 制御冷却鋼板の形状制御方法
US6062055A (en) * 1997-04-10 2000-05-16 Danieli & C. Officine Meccaniche Spa Rolling method for thin flat products and relative rolling line
JPH1129094A (ja) 1997-07-14 1999-02-02 Toshio Kawakami ツインドルヒィン船

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060021699A1 (en) * 2002-11-07 2006-02-02 Naoki Hase Heat-resistant flexible laminated board manufacturing method
US20070193322A1 (en) * 2006-02-17 2007-08-23 Beck William J Application of induction heating to control sheet flatness in cold rolling mills
US20100175452A1 (en) * 2007-06-22 2010-07-15 Joachim Ohlert Method for hot rolling and for heat treatment of a steel strip
US8634953B2 (en) 2007-08-17 2014-01-21 Outokumpu Oyj Method and equipment for flatness control in cooling a stainless steel strip
US20110208345A1 (en) * 2007-08-17 2011-08-25 Outokumpu Oyj Method and equipment for flatness control in cooling a stainless steel strip
CN101837374A (zh) * 2009-03-20 2010-09-22 西门子Vai金属科技有限公司 边缘平直度监控
US20100236310A1 (en) * 2009-03-20 2010-09-23 Siemens Vai Metals Tech Ltd Edge flatness monitoring
US20140060139A1 (en) * 2011-06-07 2014-03-06 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US9186710B2 (en) * 2011-06-07 2015-11-17 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US9566625B2 (en) 2011-06-07 2017-02-14 Nippon Steel & Sumitomo Metal Corporation Apparatus for cooling hot-rolled steel sheet
US20140076018A1 (en) * 2011-07-27 2014-03-20 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet
US9211574B2 (en) * 2011-07-27 2015-12-15 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet
US20130104616A1 (en) * 2011-10-27 2013-05-02 Bohuslav Masek Method of production of pressed sheet parts with integrated preparation of blanks of non-uniform thickness
US9186716B2 (en) * 2011-10-27 2015-11-17 Zapadoceska Univerzita V Plzni Method of production of pressed sheet parts with integrated preparation of blanks of non-uniform thickness
US20140350746A1 (en) * 2011-12-15 2014-11-27 Posco Method and Apparatus for Controlling the Strip Temperature of the Rapid Cooling Section of a Continuous Annealing Line
US9783867B2 (en) * 2011-12-15 2017-10-10 Posco Method and apparatus for controlling the strip temperature of the rapid cooling section of a continuous annealing line
US9889480B2 (en) 2013-03-11 2018-02-13 Novelis Inc. Flatness of a rolled strip
US10130979B2 (en) 2013-03-11 2018-11-20 Novelis Inc. Flatness of a rolled strip

Also Published As

Publication number Publication date
DE60039102D1 (de) 2008-07-17
EP1153673A1 (en) 2001-11-14
AU1414301A (en) 2001-05-30
EP1153673B1 (en) 2008-06-04
KR100432682B1 (ko) 2004-05-22
KR20010101563A (ko) 2001-11-14
AU760833B2 (en) 2003-05-22
CN1278792C (zh) 2006-10-11
MXPA01007250A (es) 2003-06-06
EP1153673A4 (en) 2005-08-31
WO2001036122A1 (fr) 2001-05-25
CN1336853A (zh) 2002-02-20

Similar Documents

Publication Publication Date Title
US6615633B1 (en) Metal plateness controlling method and device
KR101453129B1 (ko) 스테인리스강 스트립의 냉각시의 평평함 제어 방법 및 장치
US5927118A (en) Method for making hot-rolled steel sheet and apparatus therefor
US6327883B1 (en) Method of flattening metal strip
US9566625B2 (en) Apparatus for cooling hot-rolled steel sheet
CN108367323B (zh) 保持轧制材料的平坦的装置及方法
EP2929949B1 (en) Device for cooling hot-rolled steel sheet
JP7311764B2 (ja) 冷間タンデム圧延設備及び冷間タンデム圧延方法
JP3329186B2 (ja) 熱延鋼帯の圧延方法および装置
JP2002045908A (ja) 金属板の平坦度制御方法及び装置
EP2933031B1 (en) Method for producing steel sheet
CN114011885A (zh) 一种吉帕级热轧高强钢轧制过程板形控制方法
KR101054383B1 (ko) 열연강판의 형상교정이 가능한 열연공정장치 및 열연방법
JP3698088B2 (ja) 熱延鋼帯の製造方法
JP3848618B2 (ja) 冷間圧延工程における板幅制御方法
JP2001137943A (ja) 金属板の平坦度制御方法及び装置
JP3351239B2 (ja) 熱延鋼帯の圧延方法および装置
JP3221561B2 (ja) ステンレス鋼板の製造方法
JP3684942B2 (ja) 冷延鋼帯の製造方法
JP2003145213A (ja) 熱間圧延ライン及び熱間圧延方法
JP3307213B2 (ja) 熱延鋼帯の製造方法
JP2006320946A (ja) 熱間圧延ラインの仕上圧延機における圧延方法
JP2002102904A (ja) 熱延鋼帯の圧延方法および装置
JP2003320403A (ja) 熱延鋼帯の製造方法
JP2000176505A (ja) スケール密着性に優れた熱延鋼板の製造方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: NIPPON STEEL CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AKASHI, TORU;KOREEDA, MOTOKAZU;ARIZUMI, SEIJI;AND OTHERS;REEL/FRAME:012114/0008

Effective date: 20010815

Owner name: NITTEISU PLANT DESIGNING CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AKASHI, TORU;KOREEDA, MOTOKAZU;ARIZUMI, SEIJI;AND OTHERS;REEL/FRAME:012114/0008

Effective date: 20010815

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12